Improve sidebar workspace readability and host identity (#2790)

* fix(app): align turn footer actions

Keep running-turn actions in the same position as completed-turn actions and use the shared small icon size for both copy and fork controls.

* feat(app): improve sidebar workspace identity

Make dense sidebar workspace rows easier to scan and let each device control how connected hosts are identified.

* fix(app): keep host badges readable

Use a compact display menu and keep identity color on the host icon so translated controls fit and badge text retains standard contrast.

* fix(app): announce selected sidebar badge mode

* fix(app): retain icon-only host names for screen readers

* fix(app): name hoisted workspace rows

* fix(app): retain host identity in workspace labels

* fix(app): retain workspace status in row labels

* fix(app): defer host appearance until identity resolves

* fix(app): serialize host appearance writes

* fix(app): serialize host registry writes

* fix(app): bound sidebar host badge labels

* test(app): match workspace status labels

* fix(app): consolidate sidebar identity behavior

* test(app): assert status grouping behavior

* fix(app): keep sidebar row actions accessible

* fix(app): stabilize optimistic message layout

packages/app/src/components/sidebar-workspace-list.test.tsx

@@ -43,6 +43,7 @@ import { seedSessionWorkspaces } from "@/test/seed-session";
 import { useSidebarOrderStore } from "@/stores/sidebar-order-store";
 import { useWorkspaceFields } from "@/stores/session-store-hooks";
 import { useActiveWorkspaceSelection } from "@/stores/navigation-active-workspace-store";
+import { defaultHostAppearance } from "@/hosts/appearance";
 
 vi.mock("@react-native-async-storage/async-storage", () => ({
   default: {
@@ -146,6 +147,7 @@ function makeHost(): HostProfile {
   return {
     serverId: SERVER_ID,
     label: "Render Count Host",
+    appearance: defaultHostAppearance(),
     lifecycle: {},
     connections: [],
     preferredConnectionId: null,